
[Federal Register: October 31, 2008 (Volume 73, Number 212)]
[Rules and Regulations]               
[Page 64874-64876]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr31oc08-5]                         

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-0623; Directorate Identifier 2008-NM-089-AD; 
Amendment 39-15699; AD 2008-22-04]
RIN 2120-AA64

 
Airworthiness Directives; Bombardier Model CL-600-2C10 (Regional 
Jet Series 700, 701, & 702), CL-600-2D15 (Regional Jet Series 705), and 
CL-600-2D24 (Regional Jet Series 900) Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule.

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SUMMARY: We are superseding an existing airworthiness directive (AD) 
for the products listed above. This AD results from mandatory 
continuing airworthiness information (MCAI) originated by an aviation 
authority of another country to identify and correct an unsafe 
condition on an aviation product. The MCAI describes the unsafe 
condition as:

    Bombardier Aerospace has completed a system safety review of the 
aircraft fuel system against fuel tank safety standards * * *.
    [A]ssessment showed that supplemental maintenance tasks [for the 
fuel tank wiring harness installation, and the hydraulic system No. 
3 temperature transducer, among other items] are required to prevent 
potential ignition sources inside the fuel system, which could 
result in a fuel tank explosion. * * *

We are issuing this AD to require actions to correct the unsafe 
condition on these products.

DATES: This AD becomes effective December 5, 2008.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of December 5, 
2008.
    The Director of the Federal Register approved the incorporation by 
reference of Section 3, ``Fuel System Limitations,'' of Part 2 of 
Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance 
Requirements Manual CSP B-053, Revision 9, dated July 20, 2007, listed 
in this AD, as of April 16, 2008 (73 FR 13098, March 12, 2008).

ADDRESSES: You may examine the AD docket on the Internet at http://
www.regulations.gov or in person at the U.S. Department of 
Transportation, Docket Operations, M-30, West Building Ground Floor, 
Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC.

FOR FURTHER INFORMATION CONTACT: Rocco Viselli, Aerospace Engineer, 
Airframe and Propulsion Branch, ANE-171, FAA, New York Aircraft 
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New 
York 11590; telephone (516) 228-7331; fax (516) 794-5531.

SUPPLEMENTARY INFORMATION: 

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to include an AD that would apply to the specified products. 
That NPRM was published in the Federal Register on June 9, 2008 (73 FR 
32486) and proposed to supersede AD 2008-06-01, Amendment 39-15413 (73 
FR 13098, March 12, 2008). That NPRM proposed to correct an unsafe 
condition for the specified products. The MCAI states:

    Bombardier Aerospace has completed a system safety review of the 
aircraft fuel system against fuel tank safety standards introduced 
in Chapter 525 of the Airworthiness Manual through Notice of 
Proposed Amendment (NPA) 2002-043. The identified non-compliances 
were then assessed using Transport Canada Policy Letter No. 525-001, 
to determine if mandatory corrective action is required.
    The assessment showed that supplemental maintenance tasks [for 
the fuel tank wiring harness installation, and the hydraulic system 
No. 3 temperature transducer, among other items] are required to 
prevent potential ignition sources inside the fuel system, which 
could result in a fuel tank explosion. Revision has been made to 
Canadair Regional Jet Models CL-600-2C10, CL-600-2D15 and CL-600-
2D24 Maintenance Requirements Manual, CSP B-053, Part 2, Section 3 
``Fuel System Limitations'' to introduce the required maintenance 
tasks.

The corrective action is revising the Airworthiness Limitations Section 
(ALS) of the Instructions for Continued Airworthiness to incorporate 
new limitations for fuel tank systems. You may obtain further 
information by examining the MCAI in the AD docket.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We received no comments on the NPRM or on the determination of 
the cost to the public.

Remove References to Later Revisions

    We removed the references to ``later revisions'' of the applicable 
service information in paragraphs (f) and (g)(2) of this AD to be 
consistent with FAA policy and Office of the Federal Register 
regulations. We may consider approving the use of later revisions of 
the service information as an alternative method of compliance with 
this AD, as provided by paragraph (h)(1) of this AD.

New Service Information

    We received Revision 10, dated March 20, 2008, of Section 3, ``Fuel 
System Limitations,'' of Part 2 of Bombardier CL-600-2C10, CL-600-2D15, 
and CL-600-2D24 maintenance requirements manual CSP B-053. The tasks 
specified in Revision 10 of the Maintenance Requirements Manual (MRM) 
are essentially the same as those in the previous revision of the MRM 
cited in the NPRM. We have revised paragraphs (f) and (g)(1) of the AD 
to reference Revisions 9 and 10 of the MRM.

[[Page 64875]]

Conclusion

    We reviewed the available data, and determined that air safety and 
the public interest require adopting the AD with the changes described 
previously. We determined that these changes will not increase the 
economic burden on any operator or increase the scope of the AD.

Differences Between This AD and the MCAI or Service Information

    We have reviewed the MCAI and related service information and, in 
general, agree with their substance. But we might have found it 
necessary to use different words from those in the MCAI to ensure the 
AD is clear for U.S. operators and is enforceable. In making these 
changes, we do not intend to differ substantively from the information 
provided in the MCAI and related service information.
    We might also have required different actions in this AD from those 
in the MCAI in order to follow our FAA policies. Any such differences 
are highlighted in a Note within the AD.

Costs of Compliance

    We estimate that this AD will affect about 289 products of U.S. 
registry. We also estimate that it will take about 1 work-hour per 
product to comply with the basic requirements of this AD. The average 
labor rate is $80 per work-hour. Based on these figures, we estimate 
the cost of this AD to the U.S. operators to be $23,120, or $80 per 
product.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. ``Subtitle VII: Aviation 
Programs,'' describes in more detail the scope of the Agency's 
authority.
    We are issuing this rulemaking under the authority described in 
``Subtitle VII, Part A, Subpart III, Section 44701: General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    We determined that this AD will not have federalism implications 
under Executive Order 13132. This AD will not have a substantial direct 
effect on the States, on the relationship between the national 
government and the States, or on the distribution of power and 
responsibilities among the various levels of government.
    For the reasons discussed above, I certify this AD:
    1. Is not a ``significant regulatory action'' under Executive Order 
12866;
    2. Is not a ``significant rule'' under the DOT Regulatory Policies 
and Procedures (44 FR 11034, February 26, 1979); and
    3. Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.
    We prepared a regulatory evaluation of the estimated costs to 
comply with this AD and placed it in the AD docket.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://
www.regulations.gov; or in person at the Docket Operations office 
between 9 a.m. and 5 p.m., Monday through Friday, except Federal 
holidays. The AD docket contains the NPRM, the regulatory evaluation, 
any comments received, and other information. The street address for 
the Docket Operations office (telephone (800) 647-5527) is in the 
ADDRESSES section. Comments will be available in the AD docket shortly 
after receipt.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

0
Accordingly, under the authority delegated to me by the Administrator, 
the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by removing Amendment 39-15413 (73 FR 
13098, March 12, 2008) and adding the following new AD:

2008-22-04 Bombardier, Inc. (Formerly Canadair): Amendment 39-15699. 
Docket No. FAA-2008-0623; Directorate Identifier 2008-NM-089-AD.

Effective Date

    (a) This airworthiness directive (AD) becomes effective December 
5, 2008.

Affected ADs

    (b) This AD supersedes AD 2008-06-01, Amendment 39-15413.

Applicability

    (c) This AD applies to all Bombardier Model CL-600-2C10 
(Regional Jet Series 700, 701, & 702), CL-600-2D15 (Regional Jet 
Series 705), and CL-600-2D24 (Regional Jet Series 900) airplanes, 
certificated in any category, all serial numbers.

    Note 1: This AD requires revisions to certain operator 
maintenance documents to include new inspections. Compliance with 
these inspections is required by 14 CFR 91.403(c). For airplanes 
that have been previously modified, altered, or repaired in the 
areas addressed by these inspections, the operator may not be able 
to accomplish the inspections described in the revisions. In this 
situation, to comply with 14 CFR 91.403(c), the operator must 
request approval for an alternative method of compliance according 
to paragraph (h)(1) of this AD. The request should include a 
description of changes to the required inspections that will ensure 
the continued operational safety of the airplane.

Subject

    (d) Air Transport Association (ATA) of America Code 28: Fuel.

Reason

    (e) The mandatory continuing airworthiness information (MCAI) 
states:

    Bombardier Aerospace has completed a system safety review of the 
aircraft fuel system against fuel tank safety standards introduced 
in Chapter 525 of the Airworthiness Manual through Notice of 
Proposed Amendment (NPA) 2002-043. The identified non-compliances 
were then assessed using Transport Canada Policy Letter No. 525-001, 
to determine if mandatory corrective action is required.
    The assessment showed that supplemental maintenance tasks [for 
the fuel tank wiring harness installation, and the hydraulic system 
No. 3 temperature transducer, among other items] are required to 
prevent potential ignition sources inside the fuel system, which 
could result in a fuel tank explosion. Revision has been made to 
Canadair Regional Jet Models CL-600-2C10, CL-600-2D15 and CL-600-
2D24 Maintenance Requirements Manual, CSP B-053, Part 2, Section 3 
``Fuel System Limitations'' to introduce the required maintenance 
tasks.

The corrective action is revising the Airworthiness Limitations 
Section (ALS) of the Instructions for Continued Airworthiness to 
incorporate new limitations for fuel tank systems.

Restatement of Certain Requirements of AD 2008-06-01

    (f) Unless already done, within 60 days after April 16, 2008 
(the effective date of AD 2008-06-01), revise the ALS of the 
Instructions for Continued Airworthiness to incorporate the 
inspection requirements in Section 3, ``Fuel System Limitations,'' 
of Part 2 of Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 
Maintenance Requirements Manual CSP B-053, Revision

[[Page 64876]]

9, dated July 20, 2007; or Revision 10, dated March 20, 2008.

New Requirements of This AD: Actions and Compliance

    (g) Unless already done, do the following actions.
    (1) For task numbers 24-90-00-601, 24-90-00-602, 28-00-00-601, 
28-11-23-601, 28-11-23-602, 28-12-13-601, 29-30-00-601, and 29-30-
00-602 identified in Section 3, ``Fuel System Limitations,'' of Part 
2 of Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 
Maintenance Requirements Manual CSP B-053, Revision 9, dated July 
20, 2007; or Revision 10, dated March 20, 2008: The initial 
compliance times start at the later of the applicable ``Threshold'' 
and ``Grace Period'' times specified in Table 1 of this AD, and the 
repetitive limitation tasks must be accomplished thereafter at the 
applicable interval specified in Revision 9 or Revision 10 of the 
Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance 
Requirements Manual CSP B-053, except as provided by paragraph 
(g)(2) and (h)(1) of this AD.

                      Table 1--Initial Inspections
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                               Compliance time (whichever occurs later)
         Description         -------------------------------------------
                                    Threshold           Grace period
------------------------------------------------------------------------
Tasks with limiting           Before the            Within 2,000 flight
 intervals of 8,000 flight     accumulation of       hours after the
 hours.                        8,000 total flight    effective date of
                               hours.                this AD.
Tasks with limiting           Before the            Within 6,000 flight
 intervals of 20,000 flight    accumulation of       hours after the
 hours.                        20,000 total flight   effective date of
                               hours.                this AD.
Tasks with limiting           Before the            Within 6,000 flight
 intervals of 30,000 flight    accumulation of       hours after the
 hours.                        30,000 total flight   effective date of
                               hours.                this AD.
------------------------------------------------------------------------

    (2) After accomplishing the actions specified in paragraph 
(g)(1) of this AD, no alternative inspections/limitation tasks or 
inspection/limitation task intervals may be used unless the 
inspection/limitation task or inspection/limitation task interval is 
approved as an alternative method of compliance (AMOC) in accordance 
with the procedures specified in paragraph (h)(1) of this AD.

FAA AD Differences

    Note 2: This AD differs from the MCAI and/or service information 
as follows: No differences.

Other FAA AD Provisions

    (h) The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York Aircraft Certification Office, FAA, has the authority to 
approve AMOCs for this AD, if requested using the procedures found 
in 14 CFR 39.19. Send information to ATTN: Rocco Viselli, Aerospace 
Engineer, Airframe and Propulsion Branch, ANE-171, FAA, New York 
ACO, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; 
telephone (516) 228-7331; fax (516) 794-5531. Before using any 
approved AMOC on any airplane to which the AMOC applies, notify your 
appropriate principal inspector (PI) in the FAA Flight Standards 
District Office (FSDO), or lacking a PI, your local FSDO.
    (2) Airworthy Product: For any requirement in this AD to obtain 
corrective actions from a manufacturer or other source, use these 
actions if they are FAA-approved. Corrective actions are considered 
FAA-approved if they are approved by the State of Design Authority 
(or their delegated agent). You are required to assure the product 
is airworthy before it is returned to service.
    (3) Reporting Requirements: For any reporting requirement in 
this AD, under the provisions of the Paperwork Reduction Act, the 
Office of Management and Budget (OMB) has approved the information 
collection requirements and has assigned OMB Control Number 2120-
0056.

Related Information

    (i) Refer to MCAI Canadian Airworthiness Directive CF-2007-28, 
dated November 22, 2007; and Section 3, ``Fuel System Limitations,'' 
of Part 2 of Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 
Maintenance Requirements Manual CSP B-053, Revision 9, dated July 
20, 2007; or Revision 10, dated March 20, 2008; for related 
information.

Material Incorporated by Reference

    (j) You must use Section 3, ``Fuel System Limitations,'' of Part 
2 of Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 
Maintenance Requirements Manual CSP B-053, Revision 9, dated July 
20, 2007; or Section 3, ``Fuel System Limitations,'' of Part 2 of 
Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance 
Requirements Manual CSP B-053, Revision 10, dated March 20, 2008; to 
do the actions required by this AD, unless the AD specifies 
otherwise.
    (1) The Director of the Federal Register approved the 
incorporation by reference of Section 3, ``Fuel System 
Limitations,'' of Part 2 of Bombardier CL-600-2C10, CL-600-2D15, and 
CL-600-2D24 Maintenance Requirements Manual CSP B-053, Revision 10, 
dated March 20, 2008, under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) The Director of the Federal Register previously approved the 
incorporation by reference of Section 3, ``Fuel System 
Limitations,'' of Part 2 of Bombardier CL-600-2C10, CL-600-2D15, and 
CL-600-2D24 Maintenance Requirements Manual CSP B-053, Revision 9, 
dated July 20, 2007, on April 16, 2008 (73 FR 13098, March 12, 
2008).
    (3) For service information identified in this AD, contact 
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-
7401; e-mail thd.crj@aero.bombardier.com; Internet http://
www.bombardier.com.
    (4) You may review copies at the FAA, Transport Airplane 
Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the 
National Archives and Records Administration (NARA). For information 
on the availability of this material at NARA, call (202) 741-6030, 
or go to: http://www.archives.gov/federal-register/cfr/ibr-
locations.html.

    Issued in Renton, Washington, on October 9, 2008.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E8-25302 Filed 10-30-08; 8:45 am]

BILLING CODE 4910-13-P
